Narrated Ibn 'Umar: Allah's Apostle (p.b.u.h) (got) his head shaved after performing his Hajj.

Volume 2, Book 26, Number 785:

Narrated Abdullah bin Umar: Allah's Apostle said, "O Allah! Be merciful to those who have their head shaved." The people said, "O Allah's Apostle! And (invoke Allah for) those who get their hair cut short." The Prophet said, "O Allah! Be merciful to those who have their head shaved." The people said, "O Allah's Apostle! And those who get their hair cut short." The Prophet said (the third time), "And to those who get their hair cut short." Nafi' said that the Prophet had said once or twice, "O Allah! Be merciful to those who get their head shaved," and on the fourth time he added, "And to those who have their hair cut short."

Volume 2, Book 26, Number 786:

Narrated Abu Huraira: Allah's Apostle said, "O Allah! Forgive those who get their heads shaved." The people asked. "Also those who get their hair cut short?" The Prophet said, "O Allah! Forgive those who have their heads shaved." The people said, "Also those who get their hair cut short?" The Prophet (invoke Allah for those who have their heads shaved and) at the third time said, "also (forgive) those who get their hair cut short."

Volume 2, Book 26, Number 787:

Narrated 'Abdullah: The Prophet and some of his companions got their heads shaved and some others got their hair cut short. Narrated Muawiya: I cut short the hair of Allah's Apostle with a long blade.

Volume 2, Book 26, Number 788:

Narrated Ibn Abbas: When the Prophet came to Mecca, he ordered his Companions to perform Tawaf round the Ka'ba and between Safa and Marwa, to finish their Ihram and get their hair shaved off or cut short.

Volume 2, Book 26, Number 789:

Narrated 'Aisha: We performed Hajj with the Prophet and performed Tawaf-al-ifada on the Day of Nahr (slaughtering). Safiya got her menses and the Prophets desired from her what a husband desires from his wife. I said to him, "O Allah's Apostle! She is having her menses." He said, "Is she going to detain us?" We informed him that she had performed Tawaf-al-Ifada on the Day of Nahr. He said, "(Then you can) depart."

Volume 2, Book 26, Number 790:

Narrated Ibn Abbas: The Prophet was asked about the slaughtering, shaving (of the head), and the doing of Rami before or after the due times. He said, "There is no harm in that."

Volume 2, Book 26, Number 791:

Narrated Ibn Abbas: The Prophet was asked (as regards the ceremonies of Hajj) at Mina on the Day of Nahr and he replied that there was no harm. Then a man said to him, "I got my head shaved before slaughtering." He replied, "Slaughter (now) and there is no harm in it." (Another) man said, "I did the Rami (of the Jimar) after midday." The Prophet replied, "There was no harm in it."

Volume 2, Book 26, Number 792:

Narrated 'Abdullah bin 'Amr : Allah's Apostle stopped (for a while near the Jimar at Mina) during his last Hajj and the people started asking him questions. A man said, "Ignorantly I got my head shaved before slaughtering." The Prophet replied, "Slaughter (now) and there is no harm in it." Another man said, "Unknowingly I slaughtered the Hadi before doing the Rami." The Prophet said, "Do Rami now and there is no harm in it." So, on that day, when the Prophet was asked about anything (about the ceremonies of Hajj) done before or after (its stated time) his reply was, "Do it (now) and there is no harm."

Volume 2, Book 26, Number 793:

Narrated 'Abdullah bin 'Amr bin Al-'As: I witnessed the Prophet when he was delivering the sermon on the Day of Nahr. A man stood up and said, "I thought that such and such was to be done before such and such. I got my hair shaved before slaughtering." (Another said), "I slaughtered the Hadi before doing the Rami." So, the people asked about many similar things. The Prophet said, "Do it (now) and there is no harm in all these cases." Whenever the Prophet was asked about anything on that day, he replied, "Do it (now) and there is no harm in it."

Volume 2, Book 26, Number 794:

Narrated 'Abdullah bin 'Amr bin Al-'As: Allah's Apostle stopped while on his she-camel (the subnarrator then narrated the Hadith as above, i.e. 793).